diff options
Diffstat (limited to 'lib/asan/lit_tests/TestCases/initialization-bug.cc')
-rw-r--r-- | lib/asan/lit_tests/TestCases/initialization-bug.cc | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/lib/asan/lit_tests/TestCases/initialization-bug.cc b/lib/asan/lit_tests/TestCases/initialization-bug.cc new file mode 100644 index 0000000000000..fb289b1c7ebe4 --- /dev/null +++ b/lib/asan/lit_tests/TestCases/initialization-bug.cc @@ -0,0 +1,45 @@ +// Test to make sure basic initialization order errors are caught. + +// RUN: %clangxx_asan -O0 %s %p/Helpers/initialization-bug-extra2.cc -o %t +// RUN: ASAN_OPTIONS=check_initialization_order=true not %t 2>&1 | FileCheck %s + +// Do not test with optimization -- the error may be optimized away. + +// FIXME: https://code.google.com/p/address-sanitizer/issues/detail?id=186 +// XFAIL: darwin + +#include <cstdio> + +// The structure of the test is: +// "x", "y", "z" are dynamically initialized globals. +// Value of "x" depends on "y", value of "y" depends on "z". +// "x" and "z" are defined in this TU, "y" is defined in another one. +// Thus we shoud stably report initialization order fiasco independently of +// the translation unit order. + +int initZ() { + return 5; +} +int z = initZ(); + +// 'y' is a dynamically initialized global residing in a different TU. This +// dynamic initializer will read the value of 'y' before main starts. The +// result is undefined behavior, which should be caught by initialization order +// checking. +extern int y; +int __attribute__((noinline)) initX() { + return y + 1; + // CHECK: {{AddressSanitizer: initialization-order-fiasco}} + // CHECK: {{READ of size .* at 0x.* thread T0}} + // CHECK: {{0x.* is located 0 bytes inside of global variable .*(y|z).*}} +} + +// This initializer begins our initialization order problems. +static int x = initX(); + +int main() { + // ASan should have caused an exit before main runs. + printf("PASS\n"); + // CHECK-NOT: PASS + return 0; +} |